M. I. M. Choudhury, N. Shabnam, T. Ahsan, M. S. kabir, R. M. Khan, and S. A. Ahsan, “Effect of 1% Povidone Iodine Mouthwash/Gargle, Nasal and Eye Drop in COVID-19 patient”, BRC, vol. 7, no. 1, pp. 919–923, Jan. 2021.